Castle
WordNet
noun
(1) Interchanging the positions of the king and a rook
(2) A large building formerly occupied by a ruler and fortified against attack
(3) (chess) the piece that can move any number of unoccupied squares in a direction parallel to the sides of the chessboard
(4) A large and stately mansion
verb
(5) Move the king two squares toward a rook and in the same move the rook to the square next past the king
WiktionaryText
Etymology
From Latin castellum, literally little camp, from castrum, camp, from casa, hut or cottage
Noun
- A large building that is fortified and contains many defences; in previous ages often inhabited by a nobleman or king.
- A chess piece shaped like a castle tower which is also called a rook.
- A close helmet.
- 1786, Francis Grose, A Treatise on Ancient Armour and Weapons, p. 12,
- The castle was perhaps a figurative name for a close headpiece deduced from its enclosing and defending the head, as a castle did the whole body; or a corruption from the Old French word casquetel, a small or light helmet.
- 1786, Francis Grose, A Treatise on Ancient Armour and Weapons, p. 12,